براغي صفائح معدنية من النوع A #12 × 1/2 بوصة | رأس مسطح 82 درجة فيليبس | فولاذ مطلي بالزنك (1000 / عبوة)

Using these #12 screws for fastening HVAC ductwork and they bite into the metal perfectly without stripping. The zinc plating seems durable and the 1000-count box will last me through several jobs.

Used a hundred of these already to secure ductwork in a tight crawlspace and the zinc coating held up fine against some light moisture. The #12 size feels robust for the short length, and I didn't have a single strip-out with a standard driver bit.

The 82-degree flat heads seat perfectly flush in the metal brackets I'm using, and the Phillips drive hasn't stripped once across a hundred installs. The zinc coating looks clean and should hold up fine in the garage. These are exactly what I needed for the price, and a thousand screws means I won't